Proto J5279HAM 16mm 6-point 3/8 Drive Hand Socket

Product Description

The PROTO J5279HAM is a 16 mm, 6-point hand socket designed for use with 3/8 inch drive ratchets and extension bars. Machined from alloy steel and finished with a chrome plating, this socket delivers the wall strength needed for high-torque fastener work without sacrificing corrosion resistance. The 6-point geometry contacts fastener flats rather than corners, reducing the risk of rounding hardware under load. Overall length measures 1-57/64 inches. This socket meets ASME B107.5M standards and is suited for professional use in automotive, industrial, and general mechanical service environments.

The J5279HAM is intended for hand-tool use with standard 3/8 inch drive ratchets, breaker bars, and torque wrenches. The 16 mm size is a common fastener dimension across automotive suspension, engine, and accessory components, making this socket a regular-use piece for automotive technicians and industrial mechanics. It is not tether-capable, so it is not rated for elevated or confined-space applications where dropped-tool protocols require tool retention systems.

Key Features

• 16 mm socket size with 6-point drive geometry for reduced fastener rounding
• 3/8 inch drive compatible with standard ratchets, extensions, and torque wrenches
• Alloy steel construction for high-strength, high-torque applications
• Chrome finish provides corrosion resistance and easy cleaning
• Meets ASME B107.5M dimensional and performance standards
• Compact 1-57/64 inch overall length suits tight access areas

Compatibility

Designed for use with any standard 3/8 inch drive ratchet, breaker bar, extension, or torque wrench. Fits 16 mm hex fasteners across automotive and industrial applications.

Installation Notes

This socket is installed by hand-tool technicians using standard 3/8 inch drive equipment. Ensure the socket is fully seated on the fastener before applying torque to prevent slippage. Do not use hand sockets with impact drivers or air tools unless the socket is specifically impact-rated. Inspect the socket for cracks or deformation before each use and remove from service if any damage is found.